//
//  CZNetworkTools.swift
//  Blog
//
//  Created by whitcast on 16/7/11.
//  Copyright © 2016年 itcast. All rights reserved.
//

import UIKit
import AFNetworking

//定义请求类型枚举, 默认值从0开始

enum RequestType: Int {
    case GET
    case POST
}

//网络请求工具类
class CZNetworkTools: AFHTTPSessionManager {
    // 闭包回调别名
    typealias CallBack = (response: AnyObject?, error: NSError?)->()
    // 单例全局访问点
    static let sharedTools: CZNetworkTools = {
        let tools = CZNetworkTools()
        tools.responseSerializer.acceptableContentTypes?.insert("text/plain")
        return tools
    }()
    // 封装图片上传
    //  封装图片上传
    func requestUpload(url: String, params: AnyObject?, imageData: NSData, name: String, callBack: CallBack) {
        
        //  上传图片接口
        POST(url, parameters: params, constructingBodyWithBlock: { (formData) -> Void in
            /**
            imageData : 上传图片所需要二进制数据
            name: 服务端的获取数据的参数
            fileName: 告诉服务端我们的文件名字,服务端一般不会用,他们会自动生成唯一的一个图片名
            mimeType: 资源类型, octet-stream通用的资源类型
            */
            formData.appendPartWithFileData(imageData, name: name, fileName: "test", mimeType: "octet-stream")
            
            }, progress: nil, success: { (_, response) -> Void in
                callBack(response: response, error: nil)
            }) { (_, error) -> Void in
                callBack(response: nil, error: error)
        }
    }
    // 封装get和post请求
    func request(type: RequestType, url: String, params: AnyObject?, callBack: CallBack) {
        if type == .GET{
            GET(url, parameters: params, progress: nil, success: { (_, response) -> Void in
                callBack(response: response, error: nil)
                }, failure: { (_,error) -> Void in
                    callBack(response: nil, error: error)
            })
        }else {
            POST(url, parameters: params, progress: nil, success: { (_, response) -> Void in
                callBack(response: response, error: nil)
                }, failure: { (_, error) -> Void in
                    callBack(response: nil, error: error)
            })
        }
    }

}

// MARK:    -- 首页微博相关接口
extension CZNetworkTools {
    //  获取微博数据
    func loadStatus(maxId: Int64 = 0, sinceId: Int64 = 0, callBack: CallBack) {
        //  准备接口地址
        let url = "https://api.weibo.com/2/statuses/friends_timeline.json"
        //  准备参数
        let params = [
            "access_token": CZUserAccountViewModel.shareUserAccount.accessToken!,
            "max_id": "\(maxId)",
            "since_id": "\(sinceId)"
        ]
        
        print(url + "?access_token=" + CZUserAccountViewModel.shareUserAccount.accessToken!)
        
        request(.GET, url: url, params: params, callBack: callBack)
        
        
    }
    
    
}

//MARK: -- 发送微博相关接口
extension CZNetworkTools {
    //
    func upload(access_token: String, status: String, image: UIImage, callBack: CallBack) {
        // 准备url
        let url = "https://upload.api.weibo.com/2/statuses/upload.json"
        // 准备参数
        let params = [
            "access_token": access_token,
            "status": status
        ]
        let imageData = UIImageJPEGRepresentation(image, 0.5)!
        //  上传图片接口
        requestUpload(url, params: params, imageData: imageData, name: "pic", callBack: callBack)
    }
    
    
    func update(access_token: String, status: String, callBack: CallBack) {
        //  准备接口地址
        let url = "https://api.weibo.com/2/statuses/update.json"
        //  准备参数
        let params = [
            "access_token": access_token,
            "status": status
        ]
        //  使用共有函数进行网络请求数据
        request(.POST, url: url, params: params, callBack: callBack)
    }

}

extension CZNetworkTools {
    // 通过授权码获取accesstoken
    func requestAccesstoken(code: String, callBack: CallBack) {
        //  准备接口地址
        let url = "https://api.weibo.com/oauth2/access_token"
        //  准备参数
        let params = [
            "client_id": WeiboAppKey,
            "client_secret": WeiboAppSecret,
            "grant_type": "authorization_code",
            "code": code,
            "redirect_uri": WeiboRedirect_Uri
        ]
        
        //  使用通用接口去请求
        request(.POST, url: url, params: params, callBack: callBack)
        

    }
    
    // 获取用户信息
    func requestUserInfo(userAccount: CZUserAccount, callBack: CallBack) {
        //  请求接口地址
        let url = "https://api.weibo.com/2/users/show.json"
        //  准备请求参数
        //  int64,跟字符串放在一起编译不通过,需要转换成字符串
        let params = [
            "access_token": userAccount.access_token!,
            "uid": "\(userAccount.uid)"
        ]
        
        request(.GET, url: url, params: params, callBack: callBack)
    }

}
